Water-saving device suitable for closed water system

Abstract

The invention relates to the technical field of water-saving devices, and discloses a water-saving device suitable for a closed water system.The water-saving device comprises a filter vat, a top cover is arranged on the upper surface of the filter vat, a water inlet pipe is fixedly connected to one side of the outer wall of the filter vat, a filter assembly is installed on the inner wall of the filter vat, and a rotating shaft seat is rotationally connected to the bottom of the inner wall of the filter vat; a scraping plate is fixedly connected to one side of the outer wall of the rotating shaft seat, a water outlet pipe is fixedly connected to one side of the outer wall of the filtering barrel, a blow-off pipe is fixedly connected to the bottom of the filtering barrel, and a cleaning assembly is installed on the upper surface of the top cover. Sewage enters the filter barrel through the water inlet pipe, is filtered by the filter cartridge and then flows to the water outlet pipe, the first motor drives the U-shaped frame on the rotating shaft to rotate, the cleaning brush cleans the inner wall of the filter cartridge, maintenance is convenient, the first pipeline conveys clear water to the transmission cylinder to backwash the filter cartridge, efficient sewage cleaning is achieved, and the problem that in the prior art, the water consumption is large due to multiple times of operation is solved. And the water-saving efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water-saving devices, and in particular to a water-saving device suitable for a closed water system. Background Art

[0002] With the acceleration of industrialization, various types of closed water systems are widely used in industrial production and building refrigeration. These systems usually use liquid chilled water as the medium. Long-term operation will cause a large amount of rust, sand and other impurities to accumulate inside, which will not only affect the heat exchange efficiency of the system, but also may cause pipeline corrosion or even blockage. Therefore, how to effectively clean the dirt in the closed water system has become one of the important topics in this field.

[0003] The commonly used cleaning method at present is to add specific cleaning agents to the water system, use a circulating pump to make the agent fully contact with the dirt in the system, and then use the drain pipe to discharge the sewage with impurities. Although this method can remove the dirt in the system to a certain extent, it also has obvious disadvantages, such as the loss of a large amount of clean water and the additional input of chemicals, which increases the operating costs of the enterprise. In addition, the frequent discharge of untreated wastewater into the environment may also bring the risk of environmental pollution.

[0004] The existing cleaning method relies on a combination of physical emptying and chemical agents, which not only consumes a huge amount of water, but also causes secondary pollution due to improper selection and dosage of chemical agents, which is extremely detrimental to environmental protection. More importantly, this method does not fundamentally solve the problem of internal pollution in closed water systems, but only temporarily alleviates the symptoms. In the long run, it still needs to be operated regularly and repeatedly, and the economic benefits are not high. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a water-saving device suitable for a closed water system, which solves the problem that the prior art relies on a combination of physical emptying and chemical agents, which not only consumes a huge amount of water, but also the improper selection and dosage of chemical agents easily lead to secondary pollution.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a water-saving device suitable for a closed water system, comprising a filter barrel, a top cover is provided on the upper surface of the filter barrel, a water inlet pipe is fixedly connected to one side of the outer wall of the filter barrel, a filter assembly is installed on the inner wall of the filter barrel, a rotating shaft seat is rotatably connected to the bottom of the inner wall of the filter barrel, a scraper is fixedly connected to one side of the outer wall of the rotating shaft seat, a water outlet pipe is fixedly connected to one side of the outer wall of the filter barrel, a sewage pipe is fixedly connected to the bottom of the filter barrel, and a cleaning assembly is installed on the upper surface of the top cover; The cleaning assembly includes a fixed cylinder, a lower surface of which is fixedly connected to the upper surface of the top cover, an outer wall of the fixed cylinder is fixedly connected to a bracket, an inner wall of the bracket is fixedly connected to a motor, an output end of the motor is fixedly connected to a rotating shaft, one end of the rotating shaft is slidably connected to the inside of a rotating shaft seat, an outer wall of the rotating shaft is fixedly connected to a U-shaped frame, an inner wall of the U-shaped frame is slidably connected to a spring, one end of the spring is fixedly connected to a limiting plate, a cleaning brush is fixedly connected to one side of the outer wall of the limiting plate, the outer wall of the cleaning brush is slidably connected to the inner wall of the filter cylinder, and a flushing assembly is installed inside the fixed cylinder.

[0007] Preferably, the flushing component includes a transmission cylinder, the outer wall of the transmission cylinder is rotatably connected to the inside of a fixed cylinder, the transmission cylinder is sleeved on the outer wall of a rotating shaft, a sealing ring is fixedly connected to one side of the outer wall of the transmission cylinder, a transmission hole is opened through the inside of the transmission cylinder, a plurality of drainage pipes are fixedly connected to the outer wall of the transmission cylinder, a pipe one is fixedly connected to one side of the outer wall of the fixed cylinder, a driving component is installed on the upper surface of the top cover, a pipe two is fixedly connected to one side of the outer wall of the fixed cylinder, and one end of the pipe two is fixedly connected to a fixed cylinder two.

[0008] Preferably, the filter assembly comprises a fixed plate, an outer wall of the fixed plate is fixedly connected to the inner wall of the filter barrel, the outer wall of the fixed plate is slidably connected to a filter cartridge, and a handle is rotatably connected to the upper surface of the filter cartridge.

[0009] Preferably, the driving assembly includes motor 2, the lower surface of motor 2 is fixedly connected to the upper surface of the top cover, the output end of motor 2 is fixedly connected to a transmission shaft, the outer wall of the transmission shaft is fixedly connected to a half gear, and a belt is connected between the transmission shaft and the transmission cylinder.

[0010] Preferably, a piston assembly is installed inside the fixed cylinder 2, a pipe 3 is fixedly connected to one side of the outer wall of the fixed cylinder 2, and valves are fixedly connected to the outer walls of the pipe 1, the pipe 2 and the pipe 3.

[0011] Preferably, the piston assembly includes a limit rod, a fixed block is fixedly connected to the upper surface of the limit rod, a reciprocating screw is rotatably connected to the lower surface of the fixed block, the outer wall of the reciprocating screw is threadedly connected to motor 2, the outer wall of the reciprocating screw is threadedly connected to the piston plate, the outer wall of the reciprocating screw is fixedly connected to a spur gear, and the spur gear is meshingly connected to the half gear.

[0012] Preferably, the outer wall of the limiting plate is slidably connected to the inner wall of the U-shaped frame, and the limiting plate is used to limit the movement of the cleaning brush.

[0013] Preferably, the outer wall of the sealing ring is rotatably connected to an inner wall of the fixed cylinder, and the drain pipe is used for sealing to prevent liquid leakage.

[0014] Preferably, the outer wall of the reciprocating screw is arranged to penetrate the interior of the second fixed cylinder, and the reciprocating screw is used to drive the piston plate to reciprocate.

[0015] Preferably, the inner wall of the piston plate is slidably connected to the outer wall of the limiting rod, and the limiting rod is used to limit the operation of the piston plate.

[0016] Working principle: When the water-saving device is needed, the sewage pipe is connected to the water inlet pipe, and the sewage enters the filter cartridge. It is filtered by the filter cartridge and transmitted to the side of the outlet pipe. Clean water can be discharged through the outlet pipe for use. At the same time, when a large amount of impurities are attached to the inner wall of the filter cartridge, the chemical agent is transmitted to the fixed cartridge one through pipe three, and then the clean water is transmitted to the fixed cartridge one through pipe one. At this time, the motor one is started, and the rotating shaft is driven by the motor one to rotate, thereby driving the U-shaped frame to rotate. At this time, the rotation of the fixed plate can drive the outer wall scraper of the rotating shaft seat and the U-shaped frame to rotate synchronously. At this time, the rotation of the U-shaped frame can drive the cleaning brush to clean the inner wall of the filter cartridge. At this time, the pressure on the cleaning brush is reduced by the expansion and contraction of the spring, thereby improving the use of the cleaning brush. Lifespan, at this time, start motor 2 at the same time, and through the rotation of motor 2, the belt on the outer wall of the transmission shaft is driven to rotate, and then the belt is rotated to drive the transmission cylinder to rotate, and then the transmission shaft is rotated to drive the half gear and the spur gear to rotate in meshing, and then the spur gear is rotated to drive the reciprocating motion of the piston plate on the outer wall of the reciprocating screw, and then the movement of the piston plate can realize the mixing of chemicals and clean water, and then transmit them to the inside of the transmission cylinder through the transmission hole, and then the mixed liquid is transmitted to the inside of the filter barrel through the transmission barrel through the drain pipe, so as to achieve the effect of cleaning the inner wall of the filter barrel, and then the valve on the outer wall of the sewage pipe is opened to achieve the effect of sewage discharge, and then the top cover is opened, and then the handle is pulled to achieve the effect of replacing the filter barrel.

[0017] The present invention provides a water-saving device suitable for a closed water system, which has the following beneficial effects: 1. The present invention transmits sewage into the filter barrel through an inlet pipe, and then transmits the sewage to the vicinity of the outlet pipe after filtering the sewage through the filter cartridge. At the same time, the motor drives the U-shaped frame on the outer wall of the rotating shaft to rotate, thereby driving the cleaning brush to clean the inner wall of the filter cartridge, thereby facilitating the cleaning of the filter cartridge. At the same time, clean water is transmitted through a pipeline and then transmitted to the inside of the transmission cartridge through a fixed cartridge, thereby achieving the effect of backwashing the filter cartridge, thereby achieving the effect of efficiently cleaning sewage, and solving the problem that the prior art requires multiple operations and consumes a lot of water.

[0018] 2. The present invention drives the belt on the outer wall of the transmission shaft to rotate synchronously through motor 2, thereby achieving the effect of driving the transmission cylinder to reverse on the outer wall of the rotating shaft. Through the rotation of the transmission cylinder, the clean water inside the fixed cylinder 1 is transmitted to the drain pipe through the transmission hole and then impacts the inside of the filter cylinder, thereby achieving the effect of efficiently cleaning the filter cylinder. At the same time, by opening the valve on the outer wall of the sewage pipe, the effect of efficient sewage discharge is achieved. At the same time, by opening the top cover, the rotating shaft is separated from the inside of the rotating shaft seat, and after the top cover is removed, the filter cylinder can be quickly replaced and cleaned by pulling the handle.

[0019] 2. The present invention drives the half gear and the spur gear to mesh and rotate while the transmission shaft rotates, thereby driving the reciprocating screw to rotate inside the fixed cylinder one, thereby driving the piston plate to slide on the outer wall of the limit rod. At this time, the chemical agent is transmitted to the inside of the fixed cylinder two through the pipeline three, thereby achieving the effect of cooperating with the clean water to be transmitted to the inside of the filter barrel for efficient filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of a part of the structure of the fixing cylinder of the present invention; Figure 3 It is a schematic diagram of the structure of the fixing plate part of the present invention; Figure 4 It is a schematic diagram of the structure of the drainage pipe part of the present invention; Figure 5 It is a schematic diagram of the structure of the rotating shaft part of the present invention; Figure 6 It is a partial structural schematic diagram of the filter cartridge of the present invention; Figure 7 Based Figure 5 A partial enlarged view of point A in the figure.

[0021] Among them, 1. filter barrel; 2. top cover; 3. water inlet pipe; 4. fixing plate; 5. filter cartridge; 6. handle; 7. water outlet pipe; 8. sewage pipe; 9. rotating shaft seat; 10. scraper; 11. fixed cylinder 1; 12. bracket; 13. motor 1; 14. rotating shaft; 15. U-shaped frame; 16. spring; 17. limit plate; 18. cleaning brush; 19. transmission cylinder; 20. sealing ring; 21. transmission hole; 22. drain pipe; 23. pipeline 1; 24. valve; 25. motor 2; 26. transmission shaft; 27. belt; 28. pipeline 2; 29. ​​fixed cylinder 2; 30. pipeline 3; 31. limit rod; 32. fixed block; 33. half gear; 34. reciprocating screw; 35. piston plate; 36. spur gear. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please see attached Figure 1 -Attached Figure 7 , an embodiment of the present invention provides a water-saving device suitable for a closed water system, comprising a filter barrel 1, a top cover 2 is arranged on the upper surface of the filter barrel 1, a water inlet pipe 3 is fixedly connected to one side of the outer wall of the filter barrel 1, a filter assembly is installed on the inner wall of the filter barrel 1, a rotating shaft seat 9 is rotatably connected to the bottom of the inner wall of the filter barrel 1, a scraper 10 is fixedly connected to one side of the outer wall of the rotating shaft seat 9, a water outlet pipe 7 is fixedly connected to one side of the outer wall of the filter barrel 1, a sewage pipe 8 is fixedly connected to the bottom of the filter barrel 1, and a cleaning assembly is installed on the upper surface of the top cover 2; The cleaning component includes a fixed cylinder 11, the lower surface of the fixed cylinder 11 is fixedly connected to the upper surface of the top cover 2, the outer wall of the fixed cylinder 11 is fixedly connected to a bracket 12, the inner wall of the bracket 12 is fixedly connected to a motor 13, the output end of the motor 13 is fixedly connected to a rotating shaft 14, one end of the rotating shaft 14 is slidably connected to the inside of the rotating shaft seat 9, the outer wall of the rotating shaft 14 is fixedly connected to a U-shaped frame 15, the inner wall of the U-shaped frame 15 is slidably connected to a spring 16, one end of the spring 16 is fixedly connected to a limiting plate 17, one side of the outer wall of the limiting plate 17 is fixedly connected to a cleaning brush 18, the outer wall of the cleaning brush 18 is slidably connected to the inner wall of the filter cylinder 5, and a flushing component is installed inside the fixed cylinder 11; the flushing component includes a transmission cylinder 19, the outer wall of the transmission cylinder 19 is rotatably connected to the inside of the fixed cylinder 11, the transmission cylinder 19 is sleeved on the outer wall of the rotating shaft 14, and one side of the outer wall of the transmission cylinder 19 is fixed A sealing ring 20 is connected, a transmission hole 21 is opened inside the transmission cylinder 19, a plurality of drainage pipes 22 are fixedly connected to the outer wall of the transmission cylinder 19, a pipe 23 is fixedly connected to one side of the outer wall of the fixed cylinder 11, a driving assembly is installed on the upper surface of the top cover 2, a pipe 28 is fixedly connected to one side of the outer wall of the fixed cylinder 11, and one end of the pipe 28 is fixedly connected to a fixed cylinder 29; the filter assembly includes a fixed plate 4, the outer wall of the fixed plate 4 is fixedly connected to the inner wall of the filter barrel 1, the outer wall of the fixed plate 4 is slidably connected to the filter cylinder 5, and the upper surface of the filter cylinder 5 is rotatably connected to the handle 6; the driving assembly includes a motor 25, the lower surface of the motor 25 is fixedly connected to the upper surface of the top cover 2, the output end of the motor 25 is fixedly connected to a transmission shaft 26, the outer wall of the transmission shaft 26 is fixedly connected to a half gear 33, and a belt 27 is connected between the transmission shaft 26 and the transmission cylinder 19; Specifically, the filter barrel 1 is made of high-strength corrosion-resistant material, which can withstand the pressure of the closed water system and provide a stable filtering space for the device. The top cover 2 on the upper surface of the filter barrel 1 ensures the sealing of the device to prevent impurities from entering. The water inlet pipe 3 on one side of the outer wall is used to introduce water to be treated. Its pipe diameter is adapted to the water flow rate to ensure smooth water inlet. In the filtering component on the inner wall of the filter barrel 1, the fixing plate 4 plays the role of supporting and fixing the filter cartridge 5. Its solid structure enables the filter cartridge 5 to remain stable under the impact of water flow. The filter cartridge 5 is made of a fine filter mesh material, which can effectively intercept particulate impurities, suspended matter, etc. in the water to ensure clean water quality and improve Hand 6 facilitates the installation, disassembly and cleaning of the filter cartridge 5, and improves the convenience of maintenance. The rotating shaft seat 9 at the bottom of the inner wall of the filter barrel 1 cooperates with the scraper 10. When the scraper 10 rotates, it can scrape up the impurities settled at the bottom to prevent them from accumulating and clogging the sewage pipe 8, thereby ensuring the smoothness of sewage discharge. The water outlet pipe 7 on one side of the outer wall of the filter barrel 1 outputs filtered clean water to meet the water demand of the closed water system. The sewage pipe 8 is used to regularly discharge the filtered impurities and sewage to maintain the normal operation of the device. In the cleaning component on the upper surface of the top cover 2, the fixed cylinder 11 provides an installation basis for the internal components, and its solid material ensures the stability of the component. The bracket 12 firmly supports the motor 13. The motor 13 uses a driving motor with appropriate power. The rotating shaft 14 at its output end stably transmits power to drive the U-shaped frame 15 to rotate. The spring 16 and the limit plate 17 on the inner wall of the U-shaped frame 15 enable the cleaning brush 18 to fit tightly against the inner wall of the filter cartridge 5. The elasticity of the spring 16 ensures that the cleaning brush 18 can effectively clean the filter screen and remove attached impurities under different working conditions, thereby extending the service life of the filter cartridge 5. In the flushing assembly inside the fixed cartridge 11, the transmission cartridge 19 is sleeved on the outer wall of the rotating shaft 14. During the rotation process, water is evenly sprayed on the filter cartridge through the transmission hole 21 and the drain pipe 22. 5 inner wall, the filter screen is rinsed to further enhance the cleaning effect, the sealing ring 20 prevents water leakage and ensures the high efficiency of flushing, the pipe 1 23 is connected to the external water source to provide sufficient water flow for flushing, in the driving assembly on the upper surface of the top cover 2, the motor 25 drives the transmission shaft 26 to rotate, the half gear 33 cooperates with other components to achieve a specific transmission action, and the belt 27 stably transmits power to rotate the transmission cylinder 19, coordinates the work of various components, ensures the automatic operation of the entire cleaning and flushing process, improves the practicability and water-saving performance of the device, meets the operation requirements of the closed water system, and reduces the waste of water resources and equipment maintenance costs.

[0024] Please refer to the attached Figure 1 -Attached Figure 7A piston assembly is installed inside the fixed cylinder 29, and a pipe 30 is fixedly connected to one side of the outer wall of the fixed cylinder 29. The outer walls of the pipes 1 23, 28 and 30 are all fixedly connected to the valve 24; the piston assembly includes a limit rod 31, a fixed block 32 is fixedly connected to the upper surface of the limit rod 31, and a reciprocating screw rod 34 is rotatably connected to the lower surface of the fixed block 32. The outer wall of the reciprocating screw rod 34 is threadedly connected to the motor 25, and the outer wall of the reciprocating screw rod 34 is threadedly connected to the piston plate 35. The outer wall of the reciprocating screw rod 34 is fixedly connected to the spur gear 3 6, the spur gear 36 is meshed with the half gear 33; the outer wall of the limit plate 17 is slidably connected to the inner wall of the U-shaped frame 15, and the limit plate 17 is used to limit the movement of the cleaning brush 18; the outer wall of the sealing ring 20 is rotatably connected to the inner wall of the fixed cylinder 11, and the drain pipe 22 is used to seal to prevent liquid leakage; the outer wall of the reciprocating screw 34 is set inside the fixed cylinder 29, and the reciprocating screw 34 is used to drive the piston plate 35 to reciprocate; the inner wall of the piston plate 35 is slidably connected to the outer wall of the limit rod 31, and the limit rod 31 is used to limit the movement of the piston plate 35; Specifically, the piston assembly installed inside the fixed cylinder 29 is an important component of the water-saving device, wherein the limit rod 31 is made of high-strength metal material with a smooth and straight surface. The fixed block 32 fixed on the upper surface can stably support and fix the reciprocating screw 34 to ensure that it will not deviate or shake during rotation. The reciprocating screw 34 rotatably connected to the lower surface of the fixed block 32 cooperates with the motor 25. The motor 25 provides a stable power output to drive the reciprocating screw 34 to rotate, so that the piston plate 35 threadedly connected to the outer wall can perform reciprocating linear motion in the fixed cylinder 29. The piston plate 35 is made of rubber or plastic material with good sealing and wear resistance, and its inner wall is tightly and slidably connected to the outer wall of the limit rod 31. 31 can not only accurately guide the operation of the piston plate 35, ensuring that it always moves along a straight line during the reciprocating motion, avoiding deflection and affecting the sealing effect and working performance, but also prevent the piston plate 35 from excessive rotation or shaking during the motion, ensuring its stable operation, thereby effectively realizing the control and promotion of the water flow. The spur gear 36 fixedly connected to the outer wall of the reciprocating screw rod 34 is meshed and connected with the half gear 33. This gear transmission method can reasonably convert and transmit the rotational motion of the motor 25, making the transmission of the entire device more accurate and stable, coordinating the action sequence and rhythm between the various components, and ensuring that the operation of the device is smoother and more efficient. The outer wall of the limit plate 17 is slidably connected to the inner wall of the U-shaped frame 15, and the limit plate 17 is connected to the inner wall of the U-shaped frame 15. The positioning plate 17 is made of solid plastic or metal with a certain degree of toughness. Its main function is to accurately limit and guide the movement of the cleaning brush 18. When the cleaning brush 18 follows the U-shaped frame 15 to rotate and move up and down, the limiting plate 17 can ensure that the cleaning brush 18 always remains in a suitable position and angle, so that it fits tightly against the inner wall of the filter cartridge 5, thereby ensuring that the cleaning brush 18 can comprehensively and thoroughly clean the inner wall of the filter cartridge 5, effectively remove impurities and dirt attached to the surface of the filter screen, and improve the filtration efficiency and service life of the filter cartridge 5. The outer wall of the sealing ring 20 is rotatably connected to the inner wall of the fixed cylinder 11. The sealing ring 20 is usually made of a soft rubber material with good elasticity and sealing properties. It fits tightly against the inner wall of the fixed cylinder 11. During the rotation of the transmission cylinder 19, it can effectively prevent liquid from leaking from the connection between the transmission cylinder 19 and the fixed cylinder 11, ensure the sealing of the flushing assembly, ensure that the flushing water can be accurately sprayed on the inner wall of the filter cylinder 5, improve the flushing effect, avoid waste of water resources, and also prevent damage to other components inside the device due to leakage, thereby ensuring the normal operation and stability of the device. The drain pipe 22 is made of corrosion-resistant pipe material, and its internal channel is smooth and the pipe diameter is moderate. During the flushing process, the water flowing in from the transmission hole 21 can be evenly dispersed and sprayed on the inner wall of the filter cylinder 5. At the same time, its good sealing can prevent liquid leakage during the spraying process, ensure that the flushing water can fully act on the filter screen, and achieve efficient flushing of the filter screen.To further improve the filtering performance and water-saving effect of the device, meet the requirements of the closed water system for water quality and the rational use of water resources, the valves 24 fixedly connected to the outer walls of pipe 1 23, pipe 2 28 and pipe 3 30 are made of high-quality ball valves or butterfly valves, which can accurately control the on-off and flow rate of water flow. In different working stages of the device, such as water intake, flushing, drainage, etc., through the reasonable operation of valve 24, the water flow path and flow rate can be accurately controlled to ensure that all parts of the device can work according to the predetermined procedures and requirements, improve the automation degree and work efficiency of the device, and also facilitate the maintenance and debugging of the device to ensure its stable and reliable operation, and provide continuous and efficient water-saving and filtering services for the closed water system.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-saving device suitable for a closed water system, comprising a filter barrel (1), characterized in that: The filter barrel (1) has a top cover (2) on its upper surface, a water inlet pipe (3) is fixedly connected to one side of the outer wall of the filter barrel (1), a filter assembly is installed on the inner wall of the filter barrel (1), a rotating shaft seat (9) is rotatably connected to the bottom of the inner wall of the filter barrel (1), a scraper (10) is fixedly connected to one side of the outer wall of the rotating shaft seat (9), a water outlet pipe (7) is fixedly connected to one side of the outer wall of the filter barrel (1), a sewage pipe (8) is fixedly connected to the bottom of the filter barrel (1), and a cleaning assembly is installed on the upper surface of the top cover (2); The cleaning assembly comprises a fixed cylinder (11), the lower surface of the fixed cylinder (11) being fixedly connected to the upper surface of the top cover (2), the outer wall of the fixed cylinder (11) being fixedly connected to a bracket (12), the inner wall of the bracket (12) being fixedly connected to a motor (13), the output end of the motor (13) being fixedly connected to a rotating shaft (14), one end of the rotating shaft (14) being slidably connected to the inside of a rotating shaft seat (9), the outer wall of the rotating shaft (14) being fixedly connected to a U-shaped frame (15), the inner wall of the U-shaped frame (15) being slidably connected to a spring (16), one end of the spring (16) being fixedly connected to a limiting plate (17), one side of the outer wall of the limiting plate (17) being fixedly connected to a cleaning brush (18), the outer wall of the cleaning brush (18) being slidably connected to the inner wall of the filter cylinder (5), and a flushing assembly being installed inside the fixed cylinder (11).

2. A water-saving device suitable for a closed water system according to claim 1, characterized in that: The flushing assembly comprises a transmission cylinder (19), the outer wall of which is rotatably connected to the interior of a fixed cylinder (11), the transmission cylinder (19) being sleeved on the outer wall of a rotating shaft (14), a sealing ring (20) being fixedly connected to one side of the outer wall of the transmission cylinder (19), a transmission hole (21) being provided through the interior of the transmission cylinder (19), a plurality of drainage pipes (22) being fixedly connected to the outer wall of the transmission cylinder (19), a pipe (23) being fixedly connected to one side of the outer wall of the fixed cylinder (11), a driving assembly being installed on the upper surface of the top cover (2), a pipe (28) being fixedly connected to one side of the outer wall of the fixed cylinder (11), and a fixed cylinder (29) being fixedly connected to one end of the pipe (28).

3. A water-saving device suitable for a closed water system according to claim 2, characterized in that: The filter assembly comprises a fixed plate (4), the outer wall of the fixed plate (4) being fixedly connected to the inner wall of the filter barrel (1), the outer wall of the fixed plate (4) being slidably connected to a filter cartridge (5), and the upper surface of the filter cartridge (5) being rotatably connected to a handle (6).

4. A water-saving device suitable for a closed water system according to claim 3, characterized in that: The driving assembly comprises a second motor (25), the lower surface of the second motor (25) being fixedly connected to the upper surface of the top cover (2), the output end of the second motor (25) being fixedly connected to a transmission shaft (26), the outer wall of the transmission shaft (26) being fixedly connected to a half gear (33), and a belt (27) being transmission-connected between the transmission shaft (26) and the transmission cylinder (19).

5. A water-saving device suitable for a closed water system according to claim 3, characterized in that: A piston assembly is installed inside the fixed cylinder 2 (29), and a pipe 3 (30) is fixedly connected to one side of the outer wall of the fixed cylinder 2 (29). The outer walls of the pipe 1 (23), the pipe 2 (28) and the pipe 3 (30) are all fixedly connected to valves (24).

6. A water-saving device suitable for a closed water system according to claim 5, characterized in that: The piston assembly comprises a limit rod (31), the upper surface of the limit rod (31) is fixedly connected to a fixed block (32), the lower surface of the fixed block (32) is rotatably connected to a reciprocating screw (34), the outer wall of the reciprocating screw (34) is threadedly connected to a second motor (25), the outer wall of the reciprocating screw (34) is threadedly connected to a piston plate (35), the outer wall of the reciprocating screw (34) is fixedly connected to a spur gear (36), and the spur gear (36) is meshingly connected to the half gear (33).

7. A water-saving device suitable for a closed water system according to claim 1, characterized in that: The outer wall of the limiting plate (17) is slidably connected to the inner wall of the U-shaped frame (15), and the limiting plate (17) is used to limit the movement of the cleaning brush (18).

8. A water-saving device suitable for a closed water system according to claim 2, characterized in that: The outer wall of the sealing ring (20) is rotatably connected to the inner wall of the fixed cylinder (11), and the drainage pipe (22) is used for sealing to prevent liquid leakage.

9. A water-saving device suitable for a closed water system according to claim 6, characterized in that: The outer wall of the reciprocating screw rod (34) is arranged to penetrate the interior of the second fixed cylinder (29), and the reciprocating screw rod (34) is used to drive the piston plate (35) to reciprocate.

10. A water-saving device suitable for a closed water system according to claim 6, characterized in that: The inner wall of the piston plate (35) is slidably connected to the outer wall of the limiting rod (31), and the limiting rod (31) is used to limit the operation of the piston plate (35).

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